Plumbing Contractor Permit Requirements in Hilo, HI

Complete permit and license guide for starting a plumbing contractor in Hilo, Hawaii County, Hawaii.

Verified 2026-09-06 5 stops $400–$1,200 est. 4–10 weeks to obtain all licenses
Get my personalized route — $14.99

Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

Federal — start here

1 stop
  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Hawaii

1 stop
  1. Hawaii Department of Taxation — General Excise Tax (GET) License

    Hawaii has no sales tax. Instead the state levies a General Excise Tax on the gross income of the business itself, and unlike a sales tax it reaches services, commissions and rent as well as goods. Every business must register for a GET licence with the Department of Taxation on Form BB-1 before doing business. The rate is 4% statewide, rising to 4.5% on Oahu because of the 0.5% county surcharge, and it is owed on gross income whether or not it is passed on to the customer.

    Official government source

    $20 one-time registration fee (Form BB-1)Hawaii Tax ID issued immediately in person, in about 5–7 days online via Hawaii Tax Online, or 4–6 weeks by mail

City of Hilo / Hawaii County

3 stops
  1. Hawaii Contractors License Board — Plumbing Contractor License (C-37)

    Plumbing contractors in Hawaii must hold a C-37 Plumbing Contractor license from the Hawaii Contractors License Board (DCCA/PVL) — C-42 is the roofing classification, and there is no separate "Hawaii Board of Plumbing" issuing contractor licenses. A qualifying individual (sole proprietor or responsible managing employee) with four years of supervisory experience must pass the Business & Law and trade examinations; individual journeyman and master plumber licenses come separately from the Board of Electricians and Plumbers.

    Official government source

    $50 application fee, $75 per examination part (most classifications require two parts), and a license fee of $494–$663 for a contracting entity or sole proprietor ($334–$438 for a responsible managing employee), depending on where the issue date falls in the two-year licensing cycle. Biennial renewal is $338 for an active entity or sole proprietor.Applications filed by the first Tuesday of a month are reviewed at the following month's Board meeting (the Board does not meet in December); the qualifying individual must pass the exams within six months of approval

  2. Hawaii State General Excise Tax (GET) License

    Hawaii County does not issue a general county business license. Every business operating in Hilo must obtain a State of Hawaii General Excise Tax (GET) license, a one-time $20 filing with the Dept. of Taxation. Specific business types may need separate state or county permits.

    Official government source

    $20 one-time (State GET license; no general county business license exists)Same day–1 week via Hawaii Tax Online

  3. Hawaii County Department of Public Works, Building Division — Plumbing Permit (per project)

    A plumbing permit is pulled for each job from the County of Hawaii Department of Public Works, Building Division — the Finance Department has no permitting role. Inspections are required as the work progresses and at completion. Permits must be pulled by a contractor holding the state C-37 plumbing classification from the Contractors License Board.

    Official government source

    Set by the Hawaii County building permit fee schedule on the declared value of the work; there is no flat per-project rate published onlineApplications are filed through the county's EPIC online permit system; review time depends on scope and whether plans require engineering review

Terminus

Open for business — est. $400–$1,200 · 4–10 weeks to obtain all licenses

Want this mapped to your exact business and structure, in filing order?

Get my personalized route — $14.99

Official Sources

Related Guides